Automatic feed-stopping mechanism for embossing-rolls.



PATENTBD JUNE 16, 1903. G. R. BAKER.

AUTOMATIC FEED STOPPING MECHANISM FOR EMBOSSING ROLLS. IPPLIflA-TIQNFILED FEB. 14, 1903.

NO MODEL.

: 7 A Tran vans.

UNITED STATES Patented June 16, 1903.

PATENT OFFICE.

AUTOMATIC FEED-STOPPING MECHANISM, FOR EMBOSSlNG-ROLLS.

SPECIFICATION forming part of Letters Patent No. 731,091, dated June 16,1903. Application filed February 14,1903. Serial No. 148,426. (Nomodel.)

like; and it consists of certain novel features of combination andconstruction of parts, the preferred form whereof will be hereinafterclearly set forth,and pointed outin the claims.

The prime object of my invention is to pro- I vide simple thoughreliably efficient mechanism of the character specified adapted toinstantly stop the paper-feeding mechanism, whereby the furtherintroductionof paper, leather,or other material to be introduced intothe machine will be automatically checked.

A further object, among others,is to provide devices cooperating withthe feeding-rolls designed for introducing material into an embossing orcalendering machine or the like adapted to instantly sever the materialbeing introduced, and thereby prevent the part of the material which maycarry an uneven surface or particle of foreign matter thereon fromentering the embossing-rollers, and thereby causing injury thereto.

Afurther object, among others,is to provide suitable controlling meanscooperating with the feeding-rollers which when properly connected withthe source of power will shift the belting or operative clutchmechanism,thereby resulting in wholly cutting off the driving power fromthe machine and instantly stopping further movement thereof.

Other objects and advantages will be hereinafter made clearly apparent,reference bein g had to the accompanying drawings, which are made a partof this application, and in which Figure 1 shows a side elevation of myinvention complete as attached to an ordinary embossing-machine. Fig. 2is a detail showing view showing a transverse section of the knife andcutter-bar with which the knife cooperates to sever the paper or othermaterial.

Fig. 5 is a detail perspective view showing means for limiting themovement of the arm controlling the knife, while Fig. 6shows how the endof the knife is pivotally connected with the cutter-bar with which itcooperates.

In order to conveniently refer to the various details of my inventionand elements disposed in cooperation therewith, numerals will beemployed, the same numeral applying to a similar part throughout theseveral views.

While 1 shall in the present application describe my invention as beingapplicable for use in connection with an ordinary embossing-machine,itwill be understood that it may be readily adapted for use uponcalenderingmachines, printing-presses, and, in fact, upon any variety ofanalogous machines wherein it is desirable to instantly stop furtherintroduction of paper or other material into the embossing or printingrollers, as when the paper may carrysome foreign substance upon itssurface or where the meeting ends of two sections of the paper or othermaterial are overlapped and glued together, as will be readilyunderstood.

Referring to the numerals on the drawings, 1 indicates the frame-sectionof an ordinary embossing-machine, provided, as is common, witha pair ofembossing-rollers,asindioated by the numerals 2 and 3, the latter beingshown by dotted lines in Fig. 1. As is common in this class of machines,a suitable means for adjusting the relative approximation of the rollers2 and 3 is provided by means of the screws 4 or the equivalent thereofand also intermeshingdriving-gears 5 and 6, the former being upon thedriving-shaft, one end of which carries the pulley-wheel or equivalent7, adapted to be connected with the source of power.

Upon an extension 8 of the frame of the machine I mount the guiding orfeeding roller 9, which is constructed as is common or in any preferredway and sustained upon suitable journals 10, which are provided with thebearings 11, having depending stems -12, as clearly shown in Fig. 2. Thestems 12, which are preferably formed integral with the bearings 11, areprovided with suitable seats in the extension 8 of the frame and aredesigned to be adjustably secured in their seats in any suitable manner,as by means of the set-screw 13. It will be understood that the lowerend of the seats provided for the stems 12 may be closed or not extendedentirely through the frame section 8, in which case a set-screw maybeintroduced into a threaded aperture, so that the set-screwwill contactdirectly with the lower end of the stem 12, and thereby enable theadjustment of the stem to be easily efiected.

The paper or other material is mounted upon the storage-roller 14, whichis carried by suitable brackets or extensions 15, carried by acontiguous part of the main frame 1 or other desired point In Fig. 1 itwill be seen that the material, as indicated by the numeral 16, ispassed over the roller 9 and thence under'the guiding-bar 17 and thencedirectly between the embossing-rollers 2 and 3 and over theguiding-roller 18 to the storage-roller or other point. (Not shown.)

Itwill be understood that the guiding-roller 9 is concentrically mountedupon its journals or stub-shafts, and designed to cotiperate with saidroller is the clamping-roller 19, which is eccentrically mounted uponsuitable gudgeons or stub-shafts 20, which are provided with'suitablebearings 21 in such a manner that the larger portion or cam-face of theroller 19 will be disposed above its axis. The adjustment of thecotiperating or clamping roller"19, thus eccentrically mounted in itsoperative position, is of such character that when the larger side ofsaid roller is disposed upward the lowerorsmaller side thereof will bein close approximation to the roller 9, but separated a sufficientdistance to admit of a normal thickness, of the paper or other materialto be introduced between the two rollers without frictionally engagingthe upper roller, and it therefore follows that when any inequality ofthickness of the paper or other material, as an overlapping joint in thepaper oira lumpof foreign substance, enters between the two rollers suchincrease of thickness will induce such a frictional contact with theopposing face of the roller 19 as to cause the same to turn upon itsjournals, and designed to utilize the initial turning thus set up Irigidly connect to the shaft 20 the vertically-disposed arm or lever 22,provided at its upper end withacounterpoise or weight 23,adjustablysecured to the lever in any preferred way, as by the set-screw 24:. Thelever 22 is held normally elevated by meaus'of the bracket 25, having anoutwardly-directed arm or branch 26, against the extreme end of whichsaid lever is designed to rest, and

it is therefore obvious by reference to Figs. 1 and 2 that when theslightest movement of the eccentrically-mounted roller 19 is ind need byinequalities in the material, as hereinbefore stated, thecontrolling-lever 22 and the weight carried thereby will be instantlythrown out of their position of rest against the arm 26 and insure thatthe clamping-roller .bar 17 will be all that is required to sever thepaper, though I am enabled to utilize the partial turning of the roller19 induced, as hereinbefore described, fora variety of purposes-as, forinstance, in operating a knife so located as to cleanly sever the paperinstead of tearing it asunder, as would be the case in the absence ofsuch a knife. In the present instance, therefore, I have provided alongitudinally-disposed slot 27in the rod or bar 17, said slot beingadapted to receive the cutting edge of the knife 28, one end of which ispivotally connected to the depending ear 29, carried by a portionof theframe 8, as shown in Fig. 6, while the free end of said knife ispivotally connected to the link-section 30, the upper end of which ispivotally attached to the lever 31, and in order to provide only asufficient movement for the lever 31 as maybe necessary to operate theknife and force it home Within the slot 27 I provide the constructionillustrated in detail in Fig. 5, wherein it will be observed that thelever is provided with a sleeve 32, designed to loosely fit over the endof the shaft 20. In order, therefore, to compensate for the difierencein the movement of the shaft 20 as it rotates to permit the arm 22 totravel the full length of its path, I provide the end of the sleeve 32with the notch or recess 33 and secure a pin 34: in the shaft'20 in sucha way that the pinwill not contact with the end of the recess 33 untilthe lever 22 shall have traveled almost to the end of its course duringits operation of the clampingroller 19. By a proper location of thenotch and pin 33 and 34, respectively, it is obvious that any desiredmovement may be assured for the knife 28. It follows that the movementof the arm or lever 31 may be utilized for many other purposesindependent of the actuation of the knife or cotiperating simultaneouslywith such actuationas, forinstance, suitable connecting devices betweensaid arm and a clutch mechanism or other power-shiftin g device may beprovided which will induce an instant stopping of the machine itself. Ashereinbefore stated, however, it is thought that the cooperation of therollers 9 and 19, which are respectively concentrically andeccentrically mounted, will be all that is required as an attachment forembossing-machines, the purpose being to prevent the introduction of anyinequalities in the surface of the material from being introduced intothe embossing-rollers.

While I have described the preferred construction and combination ofparts deemed necessary in carrying out my invention, I wish tocomprehend in this application such substantial equivalents andsubstitutes as may be copsidered as falling fairly within the scope ofmy invention.

Believing that the advantages and manner of using my invention have thusbeenmade clearly apparent, further description is deemed unnecessary.

What I claim as new, and desire to secure by Letters Patent, is-

1. In a machine of the character specified, the combination therewith,of a pair of rollers, one of which is concentrically mounted, while theother is eccentrically disposed in cooperation therewith; suitable meansto adjust the relative approximation of said rollers and additionalmeans consisting'of a substantially vertically disposed weighted levercarried by the eccentrically-mounted roller adapted 'to bring saidrollers tightly together when the equilibrium of said means is disturbedwhereby the material interposed between them will be securely clampedagainst further movement as and for the purpose set forth.

2. In an embossing-machine or the like, a guide-roller 9 concentricallyand adjustably mounted in its operative position, in combination with acooperating roller eccentrically mounted and adapted to normally liewith its smaller side in close approximation to the concentric roller; acounterpoise-lever 22 carried by the eccentric roller and means to holdsaid lever in a balanced vertical position whereby when any inequalityin the thick ness of the material fed between said rollers is introducedthe counterpoised lever will be thrown outward and thereby induce apartial rotation of the clamping-roller and force the cam-face thereoftightly against the face of the concentric roller and stop all furthermovement of the material as and for the purpose set forth. p r

3. In an embossing-machine or the like, a guideroller concentrically andadjustably mounted in position, in combination with aneccentrically-mounted clamping-roller and trip mechanism carried by saidroller adapted to induce a partial rotation thereof when any excess ofthickness is encountered by the rollers, substantially as set forth.

4. In an embossing-machine, or the like, a guide-roller concentricallyand adjustably mounted in its operative position, in combination with aknife lying normally out of the path of the paper or other material; aclamping-roller eccentrically mounted in cooperation with saidguide-roller and means adapted to partially rotate the clamping-rollerwhen aninequality in the paper is encountered, whereby the cam-face ofthe clamping-roller will be brought tightly in contact with thefeeding-roller and incidentally operate the knife to sever the paper asand for the purpose set forth.

5. As an attachment for embossingmachines or the like, aconcentrically-mounted guide-roller, in combination witha clampingrollereccentrically mounted in cooperation with said guide-roller; acounterpoised lever carried by the clamping-roller; an auxiliary varm orlever 31 adapted to be actuated when the clamping-roller is turnedwhereby a paper-severin g device may be operated substantially as setforth.

6. In a machine of the character specified, a concentrically-mountedguide-roller and a clamping roller cooperating therewith; a weightedlever normally inert but adapted to instantly bring its force to bearupon the clamping-roller on the slightest movement thereof whereby theclamping-roller will be brought firmly to bear against theconcentrically-mounted roller and suitable means to utilize the partialrotation of the clampingroller to operate a paper-severing device,substantially as specified and for the purpose set forth.

In testimony whereof I aifix my signature in presence of two witnesses.

CHARLES R. BAKER. Witnesses:

C. S. FRYE, AUGUST PETERSON.

ICO

